root / image_creator / os_type / unix.py @ 3c33e68a
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1 | ae48a082 | Nikos Skalkotos | # Copyright 2012 GRNET S.A. All rights reserved.
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2 | ae48a082 | Nikos Skalkotos | #
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3 | ae48a082 | Nikos Skalkotos | # Redistribution and use in source and binary forms, with or
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4 | ae48a082 | Nikos Skalkotos | # without modification, are permitted provided that the following
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5 | ae48a082 | Nikos Skalkotos | # conditions are met:
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6 | ae48a082 | Nikos Skalkotos | #
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7 | ae48a082 | Nikos Skalkotos | # 1. Redistributions of source code must retain the above
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8 | ae48a082 | Nikos Skalkotos | # copyright notice, this list of conditions and the following
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9 | ae48a082 | Nikos Skalkotos | # disclaimer.
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10 | ae48a082 | Nikos Skalkotos | #
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11 | ae48a082 | Nikos Skalkotos | # 2. Redistributions in binary form must reproduce the above
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12 | ae48a082 | Nikos Skalkotos | # copyright notice, this list of conditions and the following
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13 | ae48a082 | Nikos Skalkotos | # disclaimer in the documentation and/or other materials
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14 | ae48a082 | Nikos Skalkotos | # provided with the distribution.
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15 | ae48a082 | Nikos Skalkotos | #
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16 | ae48a082 | Nikos Skalkotos | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | ae48a082 | Nikos Skalkotos | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | ae48a082 | Nikos Skalkotos | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | ae48a082 | Nikos Skalkotos | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | ae48a082 | Nikos Skalkotos | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | ae48a082 | Nikos Skalkotos | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | ae48a082 | Nikos Skalkotos | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | ae48a082 | Nikos Skalkotos | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | ae48a082 | Nikos Skalkotos | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | ae48a082 | Nikos Skalkotos | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | ae48a082 | Nikos Skalkotos | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | ae48a082 | Nikos Skalkotos | # POSSIBILITY OF SUCH DAMAGE.
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28 | ae48a082 | Nikos Skalkotos | #
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29 | ae48a082 | Nikos Skalkotos | # The views and conclusions contained in the software and
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30 | ae48a082 | Nikos Skalkotos | # documentation are those of the authors and should not be
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31 | ae48a082 | Nikos Skalkotos | # interpreted as representing official policies, either expressed
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32 | ae48a082 | Nikos Skalkotos | # or implied, of GRNET S.A.
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33 | aa2062ba | Nikos Skalkotos | |
34 | aa2062ba | Nikos Skalkotos | import re |
35 | 8c574358 | Nikos Skalkotos | import sys |
36 | aa2062ba | Nikos Skalkotos | |
37 | f165adc0 | Nikos Skalkotos | from image_creator.os_type import OSBase, sysprep |
38 | aa2062ba | Nikos Skalkotos | |
39 | 8c574358 | Nikos Skalkotos | |
40 | aa2062ba | Nikos Skalkotos | class Unix(OSBase): |
41 | 0d5a999d | Nikos Skalkotos | |
42 | f8119e65 | Nikos Skalkotos | sensitive_userdata = [ |
43 | f8119e65 | Nikos Skalkotos | '.bash_history',
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44 | f8119e65 | Nikos Skalkotos | '.gnupg',
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45 | f8119e65 | Nikos Skalkotos | '.ssh',
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46 | f8119e65 | Nikos Skalkotos | '.mozilla',
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47 | f8119e65 | Nikos Skalkotos | '.thunderbird'
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48 | f8119e65 | Nikos Skalkotos | ] |
49 | 0d5a999d | Nikos Skalkotos | |
50 | e77e66a9 | Nikos Skalkotos | def __init__(self, rootdev, ghandler, output): |
51 | e77e66a9 | Nikos Skalkotos | super(Unix, self).__init__(rootdev, ghandler, output) |
52 | aa2062ba | Nikos Skalkotos | |
53 | 5886f568 | Nikos Skalkotos | self.meta["USERS"] = " ".join(self._get_passworded_users()) |
54 | 5886f568 | Nikos Skalkotos | |
55 | 5886f568 | Nikos Skalkotos | def _get_passworded_users(self): |
56 | aa2062ba | Nikos Skalkotos | users = [] |
57 | aa2062ba | Nikos Skalkotos | regexp = re.compile('(\S+):((?:!\S+)|(?:[^!*]\S+)|):(?:\S*:){6}')
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58 | aa2062ba | Nikos Skalkotos | |
59 | 36e348b6 | Nikos Skalkotos | for line in self.g.cat('/etc/shadow').splitlines(): |
60 | aa2062ba | Nikos Skalkotos | match = regexp.match(line) |
61 | aa2062ba | Nikos Skalkotos | if not match: |
62 | aa2062ba | Nikos Skalkotos | continue
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63 | aa2062ba | Nikos Skalkotos | |
64 | aa2062ba | Nikos Skalkotos | user, passwd = match.groups() |
65 | aa2062ba | Nikos Skalkotos | if len(passwd) > 0 and passwd[0] == '!': |
66 | 564a18ce | Nikos Skalkotos | self.out.warn("Ignoring locked %s account." % user) |
67 | aa2062ba | Nikos Skalkotos | else:
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68 | aa2062ba | Nikos Skalkotos | users.append(user) |
69 | aa2062ba | Nikos Skalkotos | |
70 | aa2062ba | Nikos Skalkotos | return users
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71 | aa2062ba | Nikos Skalkotos | |
72 | f165adc0 | Nikos Skalkotos | @sysprep(enabled=False) |
73 | f165adc0 | Nikos Skalkotos | def remove_user_accounts(self, print_header=True): |
74 | 50273553 | Nikos Skalkotos | """Remove all user accounts with id greater than 1000"""
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75 | a9c9d939 | Nikos Skalkotos | |
76 | a9c9d939 | Nikos Skalkotos | if print_header:
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77 | f99fe99d | Nikos Skalkotos | self.out.output("Removing all user accounts with id greater than " |
78 | f99fe99d | Nikos Skalkotos | "1000")
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79 | a9c9d939 | Nikos Skalkotos | |
80 | a9c9d939 | Nikos Skalkotos | # Remove users from /etc/passwd
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81 | a9c9d939 | Nikos Skalkotos | passwd = [] |
82 | a9c9d939 | Nikos Skalkotos | removed_users = {} |
83 | 5886f568 | Nikos Skalkotos | metadata_users = self.meta['USERS'].split() |
84 | a9c9d939 | Nikos Skalkotos | for line in self.g.cat('/etc/passwd').splitlines(): |
85 | a9c9d939 | Nikos Skalkotos | fields = line.split(':')
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86 | a9c9d939 | Nikos Skalkotos | if int(fields[2]) > 1000: |
87 | a9c9d939 | Nikos Skalkotos | removed_users[fields[0]] = fields
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88 | 5886f568 | Nikos Skalkotos | # remove it from the USERS metadata too
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89 | 5886f568 | Nikos Skalkotos | if fields[0] in metadata_users: |
90 | 5886f568 | Nikos Skalkotos | metadata_users.remove(fields[0])
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91 | a9c9d939 | Nikos Skalkotos | else:
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92 | a9c9d939 | Nikos Skalkotos | passwd.append(':'.join(fields))
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93 | a9c9d939 | Nikos Skalkotos | |
94 | 5886f568 | Nikos Skalkotos | self.meta['USERS'] = " ".join(metadata_users) |
95 | a9c9d939 | Nikos Skalkotos | self.g.write('/etc/passwd', '\n'.join(passwd) + '\n') |
96 | a9c9d939 | Nikos Skalkotos | |
97 | a9c9d939 | Nikos Skalkotos | # Remove the corresponding /etc/shadow entries
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98 | a9c9d939 | Nikos Skalkotos | shadow = [] |
99 | a9c9d939 | Nikos Skalkotos | for line in self.g.cat('/etc/shadow').splitlines(): |
100 | a9c9d939 | Nikos Skalkotos | fields = line.split(':')
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101 | a9c9d939 | Nikos Skalkotos | if fields[0] not in removed_users: |
102 | a9c9d939 | Nikos Skalkotos | shadow.append(':'.join(fields))
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103 | a9c9d939 | Nikos Skalkotos | |
104 | a9c9d939 | Nikos Skalkotos | self.g.write('/etc/shadow', "\n".join(shadow) + '\n') |
105 | a9c9d939 | Nikos Skalkotos | |
106 | a9c9d939 | Nikos Skalkotos | # Remove the corresponding /etc/group entries
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107 | a9c9d939 | Nikos Skalkotos | group = [] |
108 | a9c9d939 | Nikos Skalkotos | for line in self.g.cat('/etc/group').splitlines(): |
109 | a9c9d939 | Nikos Skalkotos | fields = line.split(':')
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110 | a9c9d939 | Nikos Skalkotos | # Remove groups tha have the same name as the removed users
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111 | a9c9d939 | Nikos Skalkotos | if fields[0] not in removed_users: |
112 | a9c9d939 | Nikos Skalkotos | group.append(':'.join(fields))
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113 | a9c9d939 | Nikos Skalkotos | |
114 | a9c9d939 | Nikos Skalkotos | self.g.write('/etc/group', '\n'.join(group) + '\n') |
115 | 4cab6d62 | Nikos Skalkotos | |
116 | a9c9d939 | Nikos Skalkotos | # Remove home directories
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117 | a9c9d939 | Nikos Skalkotos | for home in [field[5] for field in removed_users.values()]: |
118 | a9c9d939 | Nikos Skalkotos | if self.g.is_dir(home) and home.startswith('/home/'): |
119 | a9c9d939 | Nikos Skalkotos | self.g.rm_rf(home)
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120 | a9c9d939 | Nikos Skalkotos | |
121 | f165adc0 | Nikos Skalkotos | @sysprep()
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122 | f165adc0 | Nikos Skalkotos | def cleanup_passwords(self, print_header=True): |
123 | 51fab9c9 | Nikos Skalkotos | """Remove all passwords and lock all user accounts"""
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124 | 51fab9c9 | Nikos Skalkotos | |
125 | 51fab9c9 | Nikos Skalkotos | if print_header:
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126 | f99fe99d | Nikos Skalkotos | self.out.output("Cleaning up passwords & locking all user " |
127 | f99fe99d | Nikos Skalkotos | "accounts")
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128 | 51fab9c9 | Nikos Skalkotos | |
129 | 51fab9c9 | Nikos Skalkotos | shadow = [] |
130 | 51fab9c9 | Nikos Skalkotos | |
131 | 51fab9c9 | Nikos Skalkotos | for line in self.g.cat('/etc/shadow').splitlines(): |
132 | 51fab9c9 | Nikos Skalkotos | fields = line.split(':')
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133 | 51fab9c9 | Nikos Skalkotos | if fields[1] not in ('*', '!'): |
134 | 51fab9c9 | Nikos Skalkotos | fields[1] = '!' |
135 | 51fab9c9 | Nikos Skalkotos | |
136 | 51fab9c9 | Nikos Skalkotos | shadow.append(":".join(fields))
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137 | 51fab9c9 | Nikos Skalkotos | |
138 | a9c9d939 | Nikos Skalkotos | self.g.write('/etc/shadow', "\n".join(shadow) + '\n') |
139 | 51fab9c9 | Nikos Skalkotos | |
140 | f165adc0 | Nikos Skalkotos | @sysprep()
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141 | f165adc0 | Nikos Skalkotos | def cleanup_cache(self, print_header=True): |
142 | f8119e65 | Nikos Skalkotos | """Remove all regular files under /var/cache"""
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143 | 22a6d232 | Nikos Skalkotos | |
144 | 3f70f242 | Nikos Skalkotos | if print_header:
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145 | e77e66a9 | Nikos Skalkotos | self.out.output('Removing files under /var/cache') |
146 | 22a6d232 | Nikos Skalkotos | |
147 | c16922f7 | Nikos Skalkotos | self.foreach_file('/var/cache', self.g.rm, ftype='r') |
148 | 0d5a999d | Nikos Skalkotos | |
149 | f165adc0 | Nikos Skalkotos | @sysprep()
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150 | f165adc0 | Nikos Skalkotos | def cleanup_tmp(self, print_header=True): |
151 | f8119e65 | Nikos Skalkotos | """Remove all files under /tmp and /var/tmp"""
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152 | 22a6d232 | Nikos Skalkotos | |
153 | 3f70f242 | Nikos Skalkotos | if print_header:
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154 | e77e66a9 | Nikos Skalkotos | self.out.output('Removing files under /tmp and /var/tmp') |
155 | 22a6d232 | Nikos Skalkotos | |
156 | 8c574358 | Nikos Skalkotos | self.foreach_file('/tmp', self.g.rm_rf, maxdepth=1) |
157 | 9297c398 | Nikos Skalkotos | self.foreach_file('/var/tmp', self.g.rm_rf, maxdepth=1) |
158 | 0d5a999d | Nikos Skalkotos | |
159 | f165adc0 | Nikos Skalkotos | @sysprep()
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160 | f165adc0 | Nikos Skalkotos | def cleanup_log(self, print_header=True): |
161 | f8119e65 | Nikos Skalkotos | """Empty all files under /var/log"""
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162 | 22a6d232 | Nikos Skalkotos | |
163 | 3f70f242 | Nikos Skalkotos | if print_header:
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164 | e77e66a9 | Nikos Skalkotos | self.out.output('Emptying all files under /var/log') |
165 | 22a6d232 | Nikos Skalkotos | |
166 | 8c574358 | Nikos Skalkotos | self.foreach_file('/var/log', self.g.truncate, ftype='r') |
167 | 0d5a999d | Nikos Skalkotos | |
168 | f165adc0 | Nikos Skalkotos | @sysprep(enabled=False) |
169 | f165adc0 | Nikos Skalkotos | def cleanup_mail(self, print_header=True): |
170 | f8119e65 | Nikos Skalkotos | """Remove all files under /var/mail and /var/spool/mail"""
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171 | 22a6d232 | Nikos Skalkotos | |
172 | 3f70f242 | Nikos Skalkotos | if print_header:
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173 | e77e66a9 | Nikos Skalkotos | self.out.output('Removing files under /var/mail & /var/spool/mail') |
174 | 22a6d232 | Nikos Skalkotos | |
175 | f8119e65 | Nikos Skalkotos | self.foreach_file('/var/spool/mail', self.g.rm_rf, maxdepth=1) |
176 | f8119e65 | Nikos Skalkotos | self.foreach_file('/var/mail', self.g.rm_rf, maxdepth=1) |
177 | 9297c398 | Nikos Skalkotos | |
178 | f165adc0 | Nikos Skalkotos | @sysprep()
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179 | f165adc0 | Nikos Skalkotos | def cleanup_userdata(self, print_header=True): |
180 | f8119e65 | Nikos Skalkotos | """Delete sensitive userdata"""
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181 | 22a6d232 | Nikos Skalkotos | |
182 | 0d5a999d | Nikos Skalkotos | homedirs = ['/root'] + self.ls('/home/') |
183 | 0d5a999d | Nikos Skalkotos | |
184 | 3f70f242 | Nikos Skalkotos | if print_header:
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185 | f99fe99d | Nikos Skalkotos | self.out.output("Removing sensitive user data under %s" % |
186 | f99fe99d | Nikos Skalkotos | " ".join(homedirs))
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187 | 3f70f242 | Nikos Skalkotos | |
188 | 0d5a999d | Nikos Skalkotos | for homedir in homedirs: |
189 | 0d5a999d | Nikos Skalkotos | for data in self.sensitive_userdata: |
190 | 0d5a999d | Nikos Skalkotos | fname = "%s/%s" % (homedir, data)
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191 | 0d5a999d | Nikos Skalkotos | if self.g.is_file(fname): |
192 | 0d5a999d | Nikos Skalkotos | self.g.scrub_file(fname)
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193 | aa2062ba | Nikos Skalkotos | |
194 | aa2062ba | Nikos Skalkotos | # vim: set sta sts=4 shiftwidth=4 sw=4 et ai : |